Answer this question truthfully
### Question: How to know you have Pulmonary valve stenosis?
### Response: Narrowing in the pulmonary valve is usually present at birth (congenital). It is caused by a problem that occurs when the unborn baby (fetus) is developing. The cause is unknown, but genetics may play a role.Narrowing that occurs in the valve itself is called pulmonary valve stenosis. There may also be narrowing just before or just after the valve. The defect may occur alone or with other congenital heart defects. The condition can be mild or severe. Pulmonary valve stenosis is a rare disorder.